Communication device, information management system, and information management method

Abstract

To make it possible to know who will use which device when a plurality of persons share a single device.SOLUTION: A communication device of the present invention includes: a sensor unit; a communication unit configured to acquire, from a server, at least initialization information and user identification information to be set in the sensor unit, upon initialization of the sensor unit based on a change in a user; an initialization unit configured to set the initialization information acquired by an acquisition unit in the sensor unit; and a display control unit configured to display the user identification information acquired by the acquisition unit on a display unit.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a communication device, an information management system, and an information management method, and can be applied to, for example, a server and a device in a sensor network. [Background technology]

[0002] In recent years, ICT (Physical Education ICT) has been utilized in physical education and health and physical education classes. One example of its utilization is the use of a sensor network system and wearable devices with sensor functions to monitor children's physical condition (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2023-150291 Summary of the Invention [Problem to be solved by the invention]

[0004] Generally, wearable devices are personal belongings, so normally, the user only needs to enter initialization information such as height and weight once.

[0005] However, when a wearable device is shared among multiple children during physical education classes at school, rather than being distributed to each child, the device is reused for each class, which is a very cumbersome process since initialization information for each child must be entered each time the device is used (i.e., each time a class is held).Furthermore, when multiple children share a single wearable device, there is also the issue of not knowing which child should use which wearable device.

[0006] In view of the above-mentioned problems, the present invention aims to provide a communication device, an information management system, and an information management method that allow users to know who is using which device when multiple people share a single device. [Means for solving the problem]

[0007] In order to solve such problems, the communication device according to the first aspect of the present invention is characterized by comprising: (1) a sensor unit; (2) a communication unit that, when initializing the sensor unit based on a change in the user, acquires from a server at least initialization information and user identification information to be set in the sensor unit; (3) an initialization unit that sets the initialization information acquired by the acquisition unit in the sensor unit; and (4) a display control unit that displays the user identification information acquired by the acquisition unit on a display unit.

[0008] The second information management system of the present invention is an information management system comprising a plurality of communication devices each having a sensor unit and a server that collects and manages sensing data from each of the communication devices, characterized in that (1) the server has a linking information storage means that stores association information between initialization information to be set in the sensor unit and user identification information that corresponds to the sensor identification information of the sensor unit of each communication device, and a communication unit that, upon receiving an initialization instruction from each communication device, provides the corresponding initialization information and user identification information to the requesting communication device based on the sensor identification information of the sensor unit of the requesting communication device, and (2) each communication device has at least a communication unit that, when initializing based on a change in the user of the sensor unit, acquires from the server the initialization information and user identification information to be set in the sensor unit, an initialization unit that sets the initialization information acquired by the acquisition unit in the sensor unit, and a display control unit that displays the user identification information acquired by the acquisition unit on a display unit.

[0009] The third information management method of the present invention is an information management method for a system including a plurality of communication devices each having a sensor unit and a server that collects and manages sensing data from each communication device, characterized in that (1) the server stores association information between initialization information to be set in the sensor unit and user identification information that is associated with the sensor identification information of the sensor unit of each communication device, and when it receives an initialization instruction from each communication device, it provides the corresponding initialization information and user identification information to the requesting communication device based on the sensor identification information of the sensor unit of the requesting communication device, and each communication device, when initializing based on a change in the user of the sensor unit, receives at least the initialization information and user identification information to be set in the sensor unit from the server, sets the initialization information received by the receiving unit in the sensor unit, and displays the user identification information received by the receiving unit on the display unit. [Effects of the Invention]

[0010] According to the present invention, when a single device is shared by multiple people, it is possible to know who is using which device. [Brief explanation of the drawings]

[0011] [Figure 1] 2 is a diagram illustrating the internal configuration of a sensor device and a server according to an embodiment of the present invention; FIG. [Figure 2] 1 is a diagram showing the overall configuration of a sensor network system according to an embodiment; [Figure 3] FIG. 3 is a sequence diagram showing an information management method in the sensor network system of the first embodiment. [Figure 4] FIG. 2 is a diagram showing the configuration of first and second linked information according to the first embodiment. [Figure 5] FIG. 10 is a sequence diagram showing an information management method in the sensor network system of the second embodiment. [Figure 6] FIG. 10 is a diagram showing the configuration of initialization information and first linking information according to the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] (A) First embodiment A first embodiment of a communication device, an information management system, and an information management method according to the present invention will be described in detail below with reference to the drawings.

[0013] In the following, "initialization information" refers to information set for the sensor unit mounted on the sensor device, and includes, for example, values ​​such as age, height, weight, and gender. However, "initialization information" is not limited to this.

[0014] The "sensor identification information" is information for uniquely identifying a sensor, and may be, for example, a sensor identification number.

[0015] "User identification information" is information for uniquely identifying a user who uses a sensor device, and includes, for example, the name of the school to which the user belongs, the user's name, the grade and class at the school, attendance number, etc. The items of "user identification information" can be changed as appropriate depending on the operation of the system, etc., and various items can be used as long as they can identify the user.

[0016] The "first association information" is information that associates the sensor identification information with the initialization information.

[0017] The "second linking information" is information that associates the user identification information with the initialization information.

[0018] (A-1) Configuration of the First Embodiment (A-1-1) Overall composition FIG. 2 is a diagram showing the overall configuration of the sensor network system according to the embodiment.

[0019] In Figure 2, the sensor network system 1 of the first embodiment has a sensor network base station (hereinafter also referred to as a "base station") 100, multiple sensor devices (hereinafter also referred to as "communication devices" or "devices") 200, a server 300, an initialization information display unit 400, and an information reading unit 500.

[0020] Figure 2 illustrates an example in which a sensor network (wireless communication system) is configured for each school, consisting of multiple sensor devices 200 and a base station 100. However, the configuration of the sensor network is not limited to that shown in Figure 2, as long as the same functions and effects can be obtained.

[0021] Each sensor device 200, base station 100, and server 300 is assigned unique identification information (e.g., MAC address, short address, IP address, etc.) used on the network. Packet transmission from the sensor device 200 to the base station 100 is called "upstream communication," and packet transmission from the base station 100 to the sensor device 200 is called "downstream communication."

[0022] The sensor device 200 includes a sensor and a wireless communication device, and can be a wearable device. For example, the sensor device 200 can be a wearable device that includes a wireless communication function and a sensor function, and the sensor device 200 is worn by a child or student at school to manage the health information of the child or student. Note that the use of the sensor network system 1 is not limited to managing the health information of children or students at school.

[0023] The sensor devices 200 have a sensor function and wirelessly transmit data sensed by the sensors to the base station 100. The base station 100 then collects data from each of the multiple sensor devices 200 and transmits the collected data to the server 300 via the network NT. This allows the server 300 to manage the sensing data of each of the multiple sensor devices 200 for each sensor device 200 in each sensor network (wireless communication system).

[0024] The initialization information display unit 400 displays the initialization information. For example, a URL that allows access to the initialization information (for example, a URL where the initialization information is saved) is converted into a two-dimensional code (or a one-dimensional code), and the initialization information display unit 400 displays the two-dimensional code (or a one-dimensional code). The initialization information display unit 400 may also display a search key or search keyword for accessing the initialization information. Of course, the information displayed on the initialization information display unit 400 may be the initialization information itself converted into a two-dimensional code (or a one-dimensional code).

[0025] For example, the initialization information display unit 400 may be a sticker, paper, or the like bearing a two-dimensional code (or one-dimensional code) that encodes the access URL of the initialization information. However, the initialization information display unit 400 is not limited to this, and may also be a display unit such as a liquid crystal display that can display a two-dimensional code (or one-dimensional code).

[0026] The information reading unit 500 reads the initialization information of the initialization information display unit 400 and the sensor identification information of the sensor device 200, and may be, for example, a camera or a reader that reads a two-dimensional code (or a one-dimensional code).

[0027] For example, the information reading unit 500 as a camera simultaneously or approximately simultaneously reads the initialization information and the sensor identification information, associates the initialization information with the sensor identification information, and provides the association information to the server 300. This allows the server 300 to store first linking information that associates the initialization information with the sensor identification information.

[0028] (A-1-2) Detailed configuration of the sensor device 200 FIG. 1 is a diagram showing the internal configuration of each of a sensor device 200 and a server 300 according to the embodiment.

[0029] The sensor device 200 includes a sensor unit 210 , a communication unit 220 , a sensor identification information display unit 230 , a user identification information display unit 240 , and a control unit 250 .

[0030] The sensor unit 210 is a sensor that acquires vital data such as heart rate, body temperature, number of steps, etc. The sensor unit 210 measures the vital data of the person wearing the sensor device 200.

[0031] Here, an example is given in which the sensor unit 210 senses vital data, but the target data is not limited to this, and may include acceleration data, gyro (tilt) data, etc., as long as the data necessary for managing the health of the person being managed can be obtained.

[0032] The communication unit 220 wirelessly transmits the data measured by the sensor unit 210 to the base station 100.

[0033] The communication unit 220 exchanges information with the base station 100. The communication unit 220 wirelessly receives a packet including network setting information from the base station 100, and sets the received network setting information. Here, the network setting information is setting information related to the wireless communication network between the sensor device 200 itself and the base station 100. For example, the network setting information can be information including the period from when the sensor device 200 receives a beacon until when the sensor device 200 transmits data of the sensor device 200 itself.

[0034] The sensor identification information display unit 230 indicates sensor identification information that uniquely identifies the sensor unit 210 of the sensor device 200. For example, the sensor identification information display unit 230 has a two-dimensional code (e.g., a QR code (registered trademark) or the like) that indicates the sensor identification information, and may be a sticker or the like on which the two-dimensional code is printed. Furthermore, for example, the sensor identification information display unit 230 may be configured to display the sensor identification information on a display or the like of the sensor device 200 as a wearable device.

[0035] The user identification information display unit 240 displays user identification information that uniquely identifies the user who wears the sensor device 200. The user identification information display unit 240 can be, for example, a display of the sensor device 200 as a wearable device, and displays the user identification information on the display.

[0036] The control unit 250 controls the functions of the sensor device 200. The control unit 250 can include a CPU, a ROM, a RAM, an EEPROM, an input / output interface unit, etc., and the CPU executes a processing program stored in the ROM, thereby performing various functions of the sensor device 200.

[0037] The control unit 250 includes an initialization unit 251 , a user identification information acquisition unit 252 , and a display control unit 253 .

[0038] The initialization unit 251 initializes the sensor unit 210 when the power of the sensor device 200 as a wearable device is turned on or when initialization is started in the sensor device 200. For example, when the power is turned on or initialization is started, the initialization unit 251 requests an initialization instruction from the server 300, and receives the initialization instruction together with initialization information from the server 300. Then, the initialization unit 251 initializes the sensor unit 210 using the initialization information.

[0039] The user identification information acquisition unit 252 acquires user identification information from the server 300 at the time of initialization, and stores the user identification information in the sensor device 200 .

[0040] The display control unit 253 controls the display of the display unit of the sensor device 200 as a wearable device. The display control unit 253 controls the display of the user identification information acquired by the user identification information acquisition unit 252 on the user identification information display unit 240.

[0041] As will be described later, information associating multiple sensor devices 200 (sensor units 210) with personal information of users who install each sensor device 200 is first set in the server 300, which then transmits the information to the base station 100 for storage. Thereafter, the base station 100 transmits sensor setting information to the sensor device 200, and in the sensor device 200, the communication unit 220 receives the sensor setting information, and the initialization unit 251 sets the sensor setting information in the sensor unit 210 based on the received sensor setting information.

[0042] (A-1-3) Detailed configuration of server 300 The server 300 has a base station communication unit 310, an initialization information management unit 320, a control unit 330, an initialization information storage unit 350, a sensor identification information storage unit 360, a user identification information storage unit 370, a first linking information storage unit 380, and a second linking information storage unit 390.

[0043] The base station communication unit 310 communicates with the base station 100 via the network NT. For example, the base station communication unit 310 acquires from the base station 100 the location information and the forwarding permission list of the base station 100, and acquires sensor data of the sensor device 200 accommodated therein.

[0044] The initialization information management unit 320 is for displaying the initialization information. For example, if the initialization information display unit 400 is a sticker or paper, the initialization information management unit 320 corresponds to a printer. Furthermore, if there is a printer outside the server 300, the initialization information management unit 320 may send to the external printer an image including a URL of the storage destination (storage location) of the initialization information or a two-dimensional code that encodes the initialization information itself.

[0045] The control unit 330 is responsible for various functions performed in the server 300. The control unit 330 can include a CPU, a ROM, a RAM, an EEPROM, an input / output interface unit, etc., and the various functions of the server 300 are performed by the CPU executing a processing program stored in the ROM.

[0046] The control unit 330 includes a first linked information acquisition unit 331 , an initialization instruction unit 332 , and a second linked information acquisition unit 333 .

[0047] The first linking information acquisition unit 331 acquires the initialization information of the initialization information display unit 400 and the sensor identification information of the sensor identification information display unit 230 of the sensor device 200, which are read by the information reading unit 500 such as a camera, and associates the initialization information with the sensor identification information to store the first linking information in the first linking information storage unit 380.

[0048] The second linked information acquisition unit 333 stores the initialization information according to the operator's operation, and also acquires and stores the user identification information linked to the initialization information.

[0049] For example, the second associated information acquisition unit 333 acquires initialization information of a child or the like to be set in the sensor unit 210 of the sensor device 200 from an operator terminal (not shown), and stores the information in the initialization information storage unit 350. Furthermore, the second associated information acquisition unit 333 acquires second associated information that associates the initialization information of a child or the like with the user identification information of the child or the like, and stores the information in the second associated information storage unit 390.

[0050] When an initialization instruction request is received from the sensor device 200, the initialization instruction unit 332 instructs the requesting sensor device 200 to perform initialization. At this time, the initialization instruction unit 332 searches for initialization information associated with the sensor identification information of the requesting sensor device 200 and for user identification information further associated with the initialization information, and transmits the initialization information and the user identification information to the sensor identification information of the requesting sensor device 200.

[0051] The initialization information storage unit 350 stores initialization information, the sensor identification information storage unit 360 stores sensor identification information, and the user identification information storage unit 370 stores user identification information.

[0052] The first linked information storage unit 380 stores first linked information that associates initialization information with sensor identification information, and the second linked information storage unit 390 stores second linked information that associates initialization information with user identification information.

[0053] (A-1-4) Detailed configuration of the sensor network base station 100 When the base station 100 is powered on, it performs a process of estimating the location information of its own station (base station 100) and associating the location information of each sensor device 200 accommodated therein with the location information of its own station 100.

[0054] The base station 100 estimates the location information of the base station 100 based on signals received from GPS (Global Positioning System) satellites after powering on in order to transmit the location information of the base station 100 to the server 300. Note that the estimation method for the base station 100 is not limited to this, and if a mobile phone network is used as the network NT, the location information may be estimated using the location information of base stations in the mobile phone network.

[0055] Furthermore, the base station 100 acquires the sensor position information of the sensor devices 200 accommodated therein from the server 300, and associates the position information of the base station (base station 100) with the sensor position information of each sensor device 200.

[0056] Furthermore, the base station 100 collects sensor data wirelessly received from the sensor devices 200 accommodated in the base station 100. The base station 100 has a transfer permission list for permitting transfer of the sensor data to the server 300, and transfers the sensor data that is determined to be allowed to be transferred to the server 300 to the server 300.

[0057] For example, the transfer permission list is a list that contains the sensor identification information of sensor devices 200 that are located within the communication range of the base station 100, and the base station 100 determines that transfer of data with sensor identification information listed in the transfer permission list is permitted and transfers the data.

[0058] (A-2) Operation of the embodiment FIG. 3 is a sequence diagram showing an information management method in the sensor network system 1 of the first embodiment.

[0059] The processing order shown in FIG. 3 is an example, and the processing order in FIG. 3 may be changed depending on the operation method.

[0060] First, the operator provides the initialization information and the user identification information linked to the initialization information to the server 300 (step S100), and the initialization information is stored in the initialization information storage unit 350, and the user identification information is stored in the user identification information storage unit 370 (step S101).

[0061] Here, in server 300, second linked information acquisition unit 333 associates the initialization information with the user identification information, and stores this in second linked information storage unit 390 as second linked information.

[0062] FIG. 4B is a diagram showing the configuration of the second linking information according to the first embodiment.

[0063] As shown in Fig. 4(B), the second association information associates the initialization information with the user identification information. For example, the user identification information has items {school name, name, grade / class, attendance number, ...}, and the initialization information has items {age, height, weight, sex, ...}. In this example, the initialization information in the first row {11 years old, 140 cm, 35 kg, male, ...} corresponds to the user identification information {A Elementary School, XX, 6th grade, class 2, 3, ...}, and this second association information is saved.

[0064] The operator provides the sensor identification information to the server 300 (step S102), and the sensor identification information is stored in the sensor identification information storage unit 360 (step S103).

[0065] Next, the initialization information management unit 320 of the server 300 displays the initialization information using the initialization information display unit 400 (step S104).

[0066] For example, when initialization information is stored in a database on a network, and a two-dimensional code encoding the URL of the storage destination (storage location) of the initialization information is to be printed, the initialization information management unit 320 as a printer prints out a piece of paper, a sticker, or the like on which the two-dimensional code is printed. In this case, the initialization information display unit 400 prints out a piece of paper, a sticker, or the like on which the two-dimensional code is printed.

[0067] As another example, if the initialization information display unit 400 is a display, the initialization information management unit 320 may transmit an image including the above-mentioned two-dimensional code, and the initialization information display unit 400 may display the image including the two-dimensional code.

[0068] Next, the information reading unit 500 reads the initialization information displayed on the initialization information display unit 400 and the sensor identification information on the sensor identification information display unit 230 of the sensor device 200 (step S105), and provides information including the initialization information and the sensor identification information to the server 300 (step S106). For example, when the information reading unit 500 reads a two-dimensional code that encodes the URL of the storage destination of the initialization information, the information reading unit 500 may provide information including the URL of the storage destination of the initialization information and the sensor identification information to the server 300.

[0069] In server 300, first associated information acquisition unit 331 associates the initialization information and sensor identification information acquired from information reading unit 500 (step S107) and stores this as first associated information in first associated information storage unit 380 (step S108). For example, if information reading unit 500 provides server 300 with information on the URL of the storage destination of the initialization information in step S107, server 300 may identify the initialization information stored in the database from the acquired information on the URL of the storage destination of the initialization information, associate the identified initialization information with the sensor identification information, and store this as first associated information in first associated information storage unit 380.

[0070] FIG. 4A is a diagram showing the configuration of the first linking information according to the first embodiment.

[0071] As shown in FIG. 4(A), the first association information associates initialization information with sensor identification information.

[0072] For example, when the first linked information acquisition unit 331 acquires a signal including the initialization information {11 years old, 140 cm, 35 kg, male, ...} and the sensor identification information "11111" from the information reading unit 500, the first linked information that associates the sensor identification information "11111" with the initialization information {11 years old, 140 cm, 35 kg, male, ...} is stored in the first linked information storage unit 380.

[0073] When the power supply is turned on in the sensor device 200 or when the initialization process is started (step S109), the initialization unit 251 in the sensor device 200 sends an initialization instruction request including sensor identification information to the server 300 (step S110).

[0074] For example, the sensor device 200 transmits an initialization instruction request signal including sensor identification information to the server 300 via the base station 100. In the server 300, the base station communication unit 310 receives the initialization instruction request signal from the sensor device 200 via the base station 100.

[0075] In the server 300, the initialization instruction unit 332 analyzes the received signal of the initialization instruction request and extracts the sensor identification information of the sensor device 200 that has made the request.

[0076] Then, initialization instruction unit 332 searches for initialization information corresponding to the extracted sensor identification information from the information stored in first associated information storage unit 380. Furthermore, initialization instruction unit 332 searches for user identification information corresponding to the searched initialization information from the information stored in second associated information storage unit 390 (step S111).

[0077] The initialization instruction unit 332 creates an initialization instruction signal including the initialization information and the user identification information, and the base station communication unit 310 transmits the initialization instruction signal addressed to the sensor identification information of the requester to the base station 100 (step S112). The base station 100 transmits the initialization instruction signal including the initialization information and the user identification information received from the server 300 to the sensor device 200 corresponding to the sensor identification information.

[0078] In the sensor device 200, the initialization unit 251 sets the initialization information contained in the received initialization instruction signal in the sensor unit 210 to initialize it (step S114), and further, the user identification information acquisition unit 252 acquires the user identification information contained in the initialization instruction signal and displays the user identification information on the user identification information display unit 240 (step S115).

[0079] Thereafter, when the user's user identification information, such as the user's name, grade, class, and attendance number, is displayed, the user can use the sensor device 200 that displays the user's user identification information.

[0080] (A-3) Effects of the First Embodiment As described above, according to the first embodiment, the sensor device can acquire user identification information at startup or initialization, and can display the user identification information. As a result, it is possible to know which user should use which sensor device.

[0081] (B) Second embodiment Next, a second embodiment of a communication device, an information management system, and an information management method according to the present invention will be described in detail with reference to the drawings.

[0082] The second embodiment differs from the first embodiment in that user identification information is included as part of the initialization information.

[0083] In this case, as in the first embodiment, the user identification information is included as part of the initialization information, so that the sensor device can display the user identification information at startup or initialization, thereby making it clear which user should use which sensor device.

[0084] (B-1) Configuration and operation of the second embodiment FIG. 5 is a sequence diagram showing an information management method in the sensor network system 1 of the second embodiment.

[0085] The processing order shown in FIG. 5 is an example, and the processing order in FIG. 5 may be changed depending on the operation method.

[0086] First, the operator provides the server 300 with initialization information that includes the sensor identification information and the user identification information as a part of the information (step S200), and the initialization information is stored in the initialization information storage unit 350, and the sensor identification information is stored in the sensor identification information storage unit 360 (step S201). If the information displayed in the initialization information display unit 400 is the initialization information itself converted into a two-dimensional code (or one-dimensional code), the operator does not need to input the initialization information to the server.

[0087] FIG. 6A is a diagram showing the configuration of initialization information according to the second embodiment.

[0088] As shown in FIG. 6(A), the initialization information includes the items {age, height, weight, sex, . . .} and the user identification information {school name, name, grade / class, attendance number, . . .}.

[0089] Next, as in the first embodiment, the initialization information management unit 320 of the server 300 displays the initialization information using the initialization information display unit 400 (step S204).

[0090] The information reading unit 500 reads the initialization information displayed on the initialization information display unit 400 and the sensor identification information on the sensor identification information display unit 230 of the sensor device 200 (step S205), and provides information including the initialization information and the sensor identification information to the server 300 (step S206).

[0091] In the server 300, the first linking information acquisition unit 331 links the initialization information acquired from the information reading unit 500 with the sensor identification information (step S207), and stores this as first linking information in the first linking information storage unit 380 (step S208).

[0092] FIG. 6B is a diagram showing the configuration of the first linking information according to the second embodiment.

[0093] As shown in FIG. 6(B), the first association information associates the initialization information and sensor identification information in FIG. 6(A).

[0094] For example, when the first linked information acquisition unit 331 acquires a signal including the initialization information "{11 years old, 140 cm, 35 kg, male, ...} {A elementary school, ○○, 6th grade, 2nd class, 3, ...}" and the sensor identification information "11111", the first linked information that associates the sensor identification information "11111" with the initialization information "{11 years old, 140 cm, 35 kg, male, ...} {A elementary school, ○○, 6th grade, 2nd class, 3, ...}" is stored in the first linked information storage unit 380.

[0095] When the power supply is turned on in the sensor device 200 or when the initialization process is started (step S209), the initialization unit 251 in the sensor device 200 sends an initialization instruction request including sensor identification information to the server 300 (step S210).

[0096] For example, the sensor device 200 transmits an initialization instruction request signal including sensor identification information to the server 300 via the base station 100. In the server 300, the base station communication unit 310 receives the initialization instruction request signal from the sensor device 200 via the base station 100.

[0097] In the server 300, the initialization instruction unit 332 analyzes the received signal of the initialization instruction request and extracts the sensor identification information of the sensor device 200 that has made the request.

[0098] Then, the initialization instruction unit 332 searches the information stored in the first association information storage unit 380 for the initialization information of FIG. 6A that corresponds to the extracted sensor identification information (step S211).

[0099] 6A (including user identification information), and the base station communication unit 310 transmits the initialization instruction signal addressed to the sensor identification information of the requestor to the base station 100 (step S212). The base station 100 transmits the initialization instruction signal including the initialization information received from the server 300 to the sensor device 200 corresponding to the sensor identification information.

[0100] In the sensor device 200, the initialization unit 251 sets the initialization information contained in the received initialization instruction signal in the sensor unit 210 to initialize it (step S214), and further, the user identification information acquisition unit 252 acquires the user identification information contained in the initialization instruction signal and displays the user identification information on the user identification information display unit 240 (step S215).

[0101] (B-2) Effects of the Second Embodiment As described above, according to the second embodiment, as in the first embodiment, the sensor device can acquire user identification information at startup or initialization, and can display the user identification information, thereby making it possible to know which user should use which sensor device.

[0102] (C) Third embodiment Although various modified embodiments have been mentioned in the above-described embodiment, the present invention can also be applied to the following embodiments.

[0103] (C-1) If the sensor device 200 is not removed from the charging stand, the display control unit 253 can output an alarm or highlight the user identification information by changing the color of the information, etc. This makes it easier for a child who is unable to find or wear their own sensor device 200 to find their own sensor device 200.

[0104] To save power, the display control unit 253 may output an alarm or change the color of the user identification information for a predetermined period of time. For example, by using the clock function of the sensor device 200, an alarm may be output or the color display may be changed for a few minutes after the start of class if the sensor device 200 is not removed from the charging stand.

[0105] (C-2) In the sensor device 200, the display control unit 253 may display the user identification information in a larger size after a predetermined time has elapsed.

[0106] For example, the user identification information may be displayed in normal size for the first five minutes after the start of display, then in slightly larger characters (first-stage enlargement display) after five minutes have passed since the start of display, and in even larger characters (second-stage enlargement display) after 10 minutes have passed since the start of display. Note that when a child puts on the sensor device 200, this enlarged display process ends.

[0107] In this way, it is possible to identify children who have not found the sensor device 200 or who are not wearing the sensor device 200, and to teach them how to wear it.

[0108] Furthermore, in the sensor device 200, the display control unit 253 may display the user identification information in a larger font size for a predetermined time period from the start of display. For example, the user identification information may be displayed in fonts larger than normal for the first five minutes after the start of display, and then displayed in normal font size after five minutes have passed.

[0109] (C-3) The server 300 may have a function for schedule management and may store the identification information of the user who will use the sensor device 200 in the next lesson, so that the sensor device 200 may obtain the identification information of the user who will use each sensor device 200 in the next lesson from the server 300, and display the next user identification information.

[0110] For example, the server 300 has a scheduling function for A Elementary School, such as "9:00 to 10:00 AM: Class 6-1" and "11:00 to 12:00 PM: Class 6-2," and stores sensor identification information, initialization information, and user identification information for each time period.

[0111] Then, when the server 300 receives a request for an initialization instruction from the sensor device 200 when the sensor device 200 is powered on, the server 300 transmits to the sensor device 200 an initialization instruction signal including the initialization information and user identification information to be used for each time period of the day.

[0112] The sensor device 200 has initialization information and user identification information for each time period from the server 300, so when the time comes, it can be initialized using the initialization information for that time period and display the user identification information for that time period.

[0113] (C-4) The server 300 may have a function for schedule management and identify the user identification information of the user using the sensor device 200 depending on the time period, so that the sensor device 200 may obtain the user identification information of the user using each sensor device 200 at the current time from the server 300 and display the user identification information.

[0114] For example, the server 300 has a schedule function for A Elementary School, such as "9:00 to 10:00 is for 6th grade class 1" and "11:00 to 12:00 is for 6th grade class 2." The server 300 also stores first linking information and second linking information for each class.

[0115] Then, when the server 300 receives an initialization instruction request from the sensor device 200 when the sensor device 200 is powered on, the server 300 transmits to the sensor device 200 an initialization instruction signal including initialization information and user identification information of the class corresponding to the time when the initialization instruction request was received. For example, if the time when the server 300 receives the initialization instruction request is 9 o'clock, the server 300 may transmit to the sensor device 200 initialization information corresponding to the received sensor identification information and user identification information, which is information for Class 6-1.

[0116] (C-5) The linking of the first linking information may be performed not only by the information reading unit 500 but also by the sensor device 200. That is, the sensor device 200 as a wearable terminal may capture an image of the initialization information display unit 400 as a piece of paper on which a two-dimensional code is written, and transmit data including the image and its own sensor identification information to the server 300. Also, for example, an operator may manually input the initialization information or information indicating the location of the initialization information into the sensor device 200, and the sensor device 200 may transmit data including the input information and the sensor identification information to the server 300. This also provides the effects of the first and second embodiments described above. [Explanation of symbols]

[0117] 1: Sensor network system, 100: Sensor network base station, 200: Sensor device, 210: Sensor unit, 220: Communication unit, 230: Sensor identification information display unit, 240: User identification information display unit, 250: Control unit, 251: Initialization unit, 252: User identification information acquisition unit, 253: Display control unit, 300: Server, 310: Base station communication unit, 320: Initialization information management unit, 330: Control unit, 331: First linking information acquisition unit, 332: Initialization instruction unit, 333: Second linking information acquisition unit, 350: Initialization information storage unit, 360: Sensor identification information storage unit, 370: User identification information storage unit, 380: First linking information storage unit, 390: Second linking information storage unit, 400: Initialization information display unit, 500: Information reading unit.

Claims

1. A sensor unit; a communication unit that acquires, from a server, at least initialization information and user identification information to be set in the sensor unit when the sensor unit is initialized based on a change in the user of the sensor unit; an initialization unit that sets the initialization information acquired by the acquisition unit in the sensor unit; a display control unit that displays the user identification information acquired by the acquisition unit on a display unit; A communication device comprising:

2. The communication device according to claim 1 , wherein the display control unit displays the user identification information relating to a user after the change of the sensor unit.

3. The communication device according to claim 1 , wherein the display control unit enlarges and displays the user identification information after a predetermined time has elapsed since the user identification information was displayed.

4. 2. The communication device according to claim 1, wherein the display control unit displays user identification information including the name, grade, and attendance number of the user after the change in the sensor unit.

5. An information management system including a plurality of communication devices each having a sensor unit, and a server that collects and manages sensing data from each of the communication devices, The server: a linking information storage means for storing association information between initialization information to be set in the sensor unit and user identification information, the association information being associated with the sensor identification information of the sensor unit of each of the communication devices; a communication unit that, upon receiving an initialization instruction from each of the communication devices, provides the corresponding initialization information and user identification information to the requesting communication device based on sensor identification information of the sensor unit of the requesting communication device; and Each of the communication devices is a communication unit that acquires, from a server, at least initialization information and user identification information to be set in the sensor unit when the sensor unit is initialized based on a change in the user of the sensor unit; an initialization unit that sets the initialization information acquired by the acquisition unit in the sensor unit; a display control unit that displays the user identification information acquired by the acquisition unit on a display unit; have An information management system characterized by:

6. an information reading unit that reads the sensor identification information displayed on each of the communication devices and the initialization information that is set in the sensor of each of the communication devices; The server associates the sensor identification information acquired from the information reading unit with the initialization information and stores the association information in the association information storage unit.

6. The information management system according to claim 5,

7. An information management method for a system including a plurality of communication devices each having a sensor unit and a server that collects and manages sensing data from each of the communication devices, comprising: The server: storing association information between initialization information to be set in the sensor unit and user identification information, the association information being associated with sensor identification information of the sensor unit of each of the communication devices; When an initialization instruction is received from each of the communication devices, the initialization information and the user identification information corresponding to the requesting communication device are provided to the requesting communication device based on sensor identification information of the sensor unit of the requesting communication device; Each of the communication devices When initializing the sensor unit based on a change in the user of the sensor unit, at least initialization information and user identification information to be set in the sensor unit are acquired from the server; setting the initialization information acquired by the acquisition unit in the sensor unit; a display control unit that displays the user identification information acquired by the acquisition unit on a display unit; have An information management method comprising:

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